Distillation with Vacuum

Where is vacuum used in distillation processes?
Vacuum distillation is an important process in the pharmaceutical and chemical industry and has applications in many other sectors including beverage and food production. Another example is crude oil refining: crude oil contains heavier and lighter hydrocarbons with different boiling points, requiring two distillation processes. After atmospheric distillation, a second distillation is carried out under vacuum to separate heavy hydrocarbons at lower temperatures, minimising thermal cracking and the creation of unwanted by-products.

Our wide range of vapour-compatible, corrosion-free vacuum equipment is ideal for use in distillation processes. We offer ATEX (explosion-proof) models for use with flammable vapours, gases and liquids.

Which vacuum product are particularly suited to distillation processes with vacuum?
Screw vacuum pumps are ideal for distillation applications as they generate high vacuum in a single stage. As these pumps operate without working fluids, they are able to extract media as a vapour without contamination. As a result, the media can be reused after condensation. An extensive range of sizes and models is available, including explosion-proof versions (ATEX).

Liquid ring vacuum pumps are extremely robust vacuum generators that are used in a number of distillation processes. They can be supplied in a wide range of series, sizes and material options to suit specific applications.

Oil-lubricated rotary vane vacuum pumps are also suitable for use in distillation processes.

Examples of vacuum technology in use in distillation processes:

  • Crude Oil Distillation – Used to separate out the individual hydrocarbons
  • Solvent Recovery – Used to recover solvents from a process medium
  • Vacuum-supported Distillation – In pharmaceutical or chemical applications